Aerosol having a mink oil base



United States Patent 973,694 U.S. c1. 424-47 1 Claim rm. or. A61lr 7/00, 17/00; A61rn 11/00 This invention relates to aerosols and particularly to aerosols having a mink oil base.

Although it is well known that mink oil is considered to be of great value as a skin treatment, its use for such purpose has been relatively limited to date because no satisfactory method was known for utilizing it.

I have discovered that this problem can be solved by utilizing this oil in the form of an aerosol, which manner of use produces excellent results, particularly in that it gives the oil an excellent penetrability.

It is therefore an object of this invention to produce an improved manner of utilizing mink oil.

It is another object of this invention to present mink oil in the form of an aerosol.

While the use of an aerosol produces the above-noted improvement, it is known that such an application technique suffers, in general, from certain disadvantages in that it causes a local sensation of coldness and that the products so applied have a tendency to run, which latter phenomenon is highly undesirable in the case of oily substances.

The present invention seeks to remove these latter disadvantages by utilizing a special dispersion medium for the mink oil, which medium will be described in detail below, and by employing an atomizer equipped with a fixed-dosage valve or a continuous-feed valve and capable of delivering a spray containing particles having diameters of 3 to microns.

According to this invention, the propelling dispersion vehicle for the oil is constituted by a mixture of: 65% trichlorofluoromethane; and 35% dichlorodifluoromethane, approximately the specific gravity of which mixture is of the order of 0.7.

In further accordance with the present invention, the approximate proportion of vehicle to oil is: 32 parts of propellant gas; to 1 part of mink oil, both parts being by weight.

The result is a true aerosol which does not produce any running because of the nature of the specially proportioned mixture of trichlorofluoromethane and dichlorodifiuoromethane, which mixture yields an improved atomizing pressure and assures an excellent penetration.

The mink oil used in the aerosol should be absolutely pure. That is, the oil should be treated by a physical fractionation which does not alter any of its physicochemical properties and in which there is no accompanying chemical reaction of any type. If desired, some .perfume may be added to mask the slight odor of the oil.

According to one exemplary embodiment of the present invention, a mixture of propellant gas was used having a weight of 115.2 grams and a volume of 164.6 cc. The mass of oil mixed therewith had a weight of 3.6 grams, a specific gravity of around 0.95 and a volume of 3.79 cc. The weight ratio of the resulting mixture then equalled 32 parts of propellant to one part of oil.

The neutralization of the sensation of cold is due primarily to the relation between the constituents of the propellant in their liquid form and, secondarily, to the use of an atomization yielding particles having diameters of 3 to 10 microns.

By way of example, such atomization can be achieved by using a standard atomizer having a valve push-button, whose orifice has a diameter 0.4 a tube immersed in the mixture, whose inner diameter is generally around 3 mm., but decreases to 1 mm. at the level of the valve, and a spray nozzle having a diameter of 0.45 mm.

The atomizer casing may, of course, be made of any suitable material such as glass, plastic or metal.

While one preferred embodiment of the present invention has been described in detail herein, it should be readily appreciated that many variations and modifications thereto would occur to those skilled in the art without departing from the spirit of said invention, whose coverage should therefore be limited only by the scope of the appended claim.

I claim:

1. Product for skin :care comprising one part of mink oil and 32 parts of a dispersion agent mixed together and packaged in the form of an aerosol wherein said dispersion agent acts as a propellant and is constituted of a mixture of trichlorofiuoromethane and 35% dichlorodifluoromethane.

References Cited UNITED STATES PATENTS 2,954,325 9/1960 Baumann.

OTHER REFERENCES Herzka Journal of the Society of Cosmetic Chemists, 7/1963, vol. 14, No. 7, pp. 331-340 (pp- 331-336 and 339 relied on).

ALBERT T. MEYERS, Primary Examiner.

D. R. MAHANAND, Assistant Examiner.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,424,840 January 28, 1969 Pierre Guillemin-Tarayre It is certified that error appears in the above identified patent and that said Letters Patent are hereby corrected as shown below:

In the heading to the printed specification, line 4, "Societe Anonyme dite: Compagnie Oliver" should read Societe Anonyme dite: Compagnie Olivier Signed and sealed this 7th day of April 1970.

(SEAL) Attest:

Edward M. Fletcher, Jr. SCHUYLER, Commissioner of Patents Attesting Officer 

1. PRODUCT FOR SKIN CARE COMPRISING ONE PART OF MINK OIL AND 32 PARTS OF A DISPERSION AGENT MIXED TOGETHER AND PACKAGED IN THE FORM OF AN AEROSOL WHEREIN SAID DISPERSION AGENT ACTS AS A PROPELLANT AND IS CONSTITUTED OF A MIXTURE OF 65% TRICHLOROFLUOROMETHANE AND 35% DICHLORODIFLUOROMETHANE. 